<template>
	<div>
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>权限管理</el-breadcrumb-item>
			<el-breadcrumb-item>角色列表</el-breadcrumb-item>
		</el-breadcrumb>

		<el-card>
			<el-row>
				<el-col>
					<el-button type="primary" @click="dialogVisible = true">添加角色</el-button>
				</el-col>
			</el-row>

			<el-table :data="roleList" border stripe>
				<el-table-column type="expand">
					<template v-slot="scope">
						<el-row class="vcenter" :class="['bdbottom', i1 === 0 ? 'bdtop': '']"
							v-for="(item1, i1) in scope.row.children" :key="item1.id">
							<el-col :span="5">
								<el-tag closable @close="removeRightById(scope.row, item1.id)">{{item1.authName}}
								</el-tag>
								<i class="el-icon-caret-right"></i>
							</el-col>
							<el-col :span="19">
								<el-row class="vcenter" :class="[i2 === 0 ? '': 'bdtop']"
									v-for="(item2,i2) in item1.children" :key="item2.id">
									<el-col :span="6">
										<el-tag closable @close="removeRightById(scope.row, item2.id)" type="success">
											{{item2.authName}}
										</el-tag>
										<i class="el-icon-caret-right"></i>
									</el-col>
									<el-col :span="18">
										<el-tag closable @close="removeRightById(scope.row, item3.id)" type="warning"
											v-for="(item3,i3) in item2.children" :key="item3.id">
											{{item3.authName}}
										</el-tag>
									</el-col>
								</el-row>
							</el-col>
						</el-row>
					</template>
				</el-table-column>
				<el-table-column type="index" label="#"></el-table-column>
				<el-table-column label="角色名称" prop="roleName"></el-table-column>
				<el-table-column label="角色描述" prop="roleDesc"></el-table-column>
				<el-table-column label="操作" width="300px">
					<template v-slot="scope">
						<el-button @click="showEditDialog(scope.row.id)" size="mini" type="primary" icon="el-icon-edit">
							编辑</el-button>
						<el-button @click="removeRoleById(scope.row.id)" size="mini" type="danger"
							icon="el-icon-delete">删除</el-button>
						<el-button @click="showSetRightDialog(scope.row)" size="mini" type="warning"
							icon="el-icon-setting">分配权限
						</el-button>
					</template>
				</el-table-column>
			</el-table>
		</el-card>

		<el-dialog title="添加角色" :visible.sync="dialogVisible" width="50%" @close="addDialogClosed">
			<el-form :model="addForm" ref="addFormRef" label-width="70px">
				<el-form-item label="角色名称" prop="roleName">
					<el-input v-model="addForm.roleName"></el-input>
				</el-form-item>
				<el-form-item label="角色描述" prop="roleDesc">
					<el-input v-model="addForm.roleDesc"></el-input>
				</el-form-item>
			</el-form>

			<span slot="footer" class="dialog-footer">
				<el-button @click="dialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="addRole">确 定</el-button>
			</span>
		</el-dialog>

		<el-dialog title="修改角色" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
			<el-form :model="editForm" ref="editFormRef" label-width="70px">
				<el-form-item label="角色名称" prop="roleName">
					<el-input v-model="editForm.roleName"></el-input>
				</el-form-item>
				<el-form-item label="角色描述" prop="roleDesc">
					<el-input v-model="editForm.roleDesc"></el-input>
				</el-form-item>
			</el-form>

			<span slot="footer" class="dialog-footer">
				<el-button @click="editDialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="editRoleInfo">确 定</el-button>
			</span>
		</el-dialog>

		<el-dialog @close="SetRightDialogClosed" title="分配权限" :visible.sync="SetRightDialogVisible" width="50%">
			<el-tree ref="treeRef" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" :data="rightsList"
				:props="treeProps"></el-tree>

			<span slot="footer" class="dialog-footer">
				<el-button @click="SetRightDialogVisible = false">取 消</el-button>
				<el-button  type="primary" @click="allotRights">确 定</el-button>
			</span>
		</el-dialog>
	</div>
</template>

<script>
	export default {
		data() {
			return {
				roleList: [],
				dialogVisible: false,
				addForm: {},
				editDialogVisible: false,
				editForm: {},
				SetRightDialogVisible: false,
				rightsList: [],
				treeProps: {
					children: 'children',
					label: 'authName'
				},
				defKeys: [],
				roleId: '',
			}
		},

		created() {
			this.getRolesList()
		},

		methods: {
			async getRolesList() {
				const {
					data: res
				} = await this.$request.get('roles')
				if (res.meta.status !== 200) return this.$message.error("获取角色列表失败")
				this.roleList = res.data
			},

			addDialogClosed() {
				this.$refs.addFormRef.resetFields()
			},

			editDialogClosed() {
				this.$refs.editFormRef.resetFields()
			},


			async addRole() {
				const {
					data: res
				} = await this.$request({
					method: 'POST',
					url: '/roles',
					data: this.addForm
				})

				if (res.meta.status !== 201) return this.$message.error('添加失败')
				this.$message.success('添加成功')

				this.dialogVisible = false
				this.getRolesList()
			},

			async showEditDialog(id) {
				this.editDialogVisible = true

				const {
					data: res
				} = await this.$request.get('roles/' + id)
				if (res.meta.status !== 200) return this.$message.error('查询角色信息失败');
				this.editForm = res.data
			},

			async editRoleInfo() {
				const {
					data: res
				} = await this.$request.put('roles/' + this.editForm.roleId, {
					roleName: this.editForm.roleName,
					roleDesc: this.editForm.roleDesc
				})
				if (res.meta.status !== 200) return this.$message.error('修改失败')
				this.$message.success('修改成功')

				this.editDialogVisible = false
				this.getRolesList()
			},

			async removeRoleById(id) {
				const resConfirm = await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
					confirmButtonText: '确定',
					cancelButtonText: '取消',
					type: 'warning'
				}).catch(err => err)

				if (resConfirm !== 'confirm') {
					return this.$message.info('已取消删除')
				}

				const {
					data: res
				} = await this.$request.delete('roles/' + id)
				if (res.meta.status !== 200) return this.$message.error('删除角色失败')

				this.$message.success('删除角色成功')
				this.getRolesList()
			},

			async removeRightById(role, rightId) {
				const confirmResult = await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
					confirmButtonText: '确定',
					cancelButtonText: '取消',
					type: 'warning'
				}).catch(err => err)

				if (confirmResult !== 'confirm') return this.$message.info("取消了删除")

				const {
					data: res
				} = await this.$request.delete(`roles/${role.id}/rights/${rightId}`)
				if (res.meta.status !== 200) return this.$message.error("删除权限失败")
				role.children = res.data
				this.$message.success("删除权限成功")
			},

			async showSetRightDialog(role) {
				this.roleId = role.id
				const {
					data: res
				} = await this.$request.get('rights/tree')
				if (res.meta.status !== 200) return this.$message.error("获取权限数据失败")
				this.rightsList = res.data

				this.getLeafKeys(role, this.defKeys)
				this.SetRightDialogVisible = true
			},

			getLeafKeys(node, arr) {
				if (!node.children) return arr.push(node.id)

				node.children.forEach(item => this.getLeafKeys(item, arr))
			},
			
			SetRightDialogClosed() {
				this.defKeys = []
			},
		
			async allotRights() {
				const keys = [
					...this.$refs.treeRef.getCheckedKeys(),
					...this.$refs.treeRef.getHalfCheckedKeys()
				]
				const idStr = keys.join(",")
				const {data: res} = await this.$request.post(`roles/${this.roleId}/rights`, {rids: idStr})
				if(res.meta.status !== 200) return this.$message.error("分配权限失败")
				
				this.getRolesList()
				this.$message.success("分配权限成功")
				this.SetRightDialogVisible = false
			},
		},
	}
</script>

<style lang="less" scoped>
	.bdtop {
		border-top: 1px solid #eee;
	}

	.bdbottom {
		border-bottom: 1px solid #eee;
	}

	.el-tag {
		margin: 7px;
	}

	.vcenter {
		display: flex;
		align-items: center;
	}
</style>
